src/bmtable.c

   1 /*
   2  *  File:        bmtable.c
   3  *  Purpose:     Implementation of the XForms object bmtable.
   4  *  Author:      Alejandro Aguilar Sierra <asierra@servidor.unam.mx>
   5  *  Created:     November 1995
   6  *  Description: A bitmap table uses a single bitmap to simulate a 2d array
   7  *               of bitmap buttons. It can be used to build bitmap menus.
   8  *
   9  *  Copyright 1995, 1996 Alejandro Aguilar Sierra
  10  *
  11  *  You are free to use and modify this code under the terms of
  12  *  the GNU General Public Licence version 2 or later.
  13  *
  14  */
  15
  16 #include <config.h>
  17
  18 #include <stdlib.h>
  19 #include "bmtable.h"
  20 #include XPM_H_LOCATION
  21
  22 #if defined(__cplusplus)
  23 extern "C"
  24 {
  25 #endif
  26
  27 typedef struct   {
  28    int nx, ny;   /* Dimensions of the table */
  29    int dx, dy;   /* Size of each item */
  30    int bx, by;   /* Bitmap's position */
  31    int bw, bh;   /* Bitmap dimensions */
  32    unsigned char const * bdata;  /* Bitmap data */
  33    int maxi;     /* Number of items */
  34    int i;        /* Current position */
  35    int mousebut; /* mouse button pushed */
  36    Pixmap pix;   /* Pixmap from data (temporal) */
  37 } BMTABLE_SPEC;
  38
  39
  40 int handle_bitmaptable(FL_OBJECT * ob, int event, FL_Coord mx,
  41                        FL_Coord my, int key, void * xev);
  42
  43
  44 FL_OBJECT * fl_create_bmtable(int type, FL_Coord x, FL_Coord y,
  45                               FL_Coord w, FL_Coord h, char const * label)
  46 {
  47    FL_OBJECT * ob;
  48
  49    ob = fl_make_object(FL_BMTABLE, type, x, y, w, h, label, handle_bitmaptable);
  50    ob->boxtype = FL_BMTABLE_BOXTYPE;
  51    ob->spec = fl_calloc(1, sizeof(BMTABLE_SPEC));
  52    ((BMTABLE_SPEC *)ob->spec)->pix = 0;
  53    ((BMTABLE_SPEC *)ob->spec)->bdata= 0;
  54    ((BMTABLE_SPEC *)ob->spec)->mousebut= -1;
  55    return ob;
  56 }
  57
  58
  59 FL_OBJECT *fl_add_bmtable(int type, FL_Coord x, FL_Coord y,
  60                               FL_Coord w, FL_Coord h, char const *label)
  61 {
  62    FL_OBJECT *ob;
  63
  64    ob = fl_create_bmtable(type, x, y, w, h, label);
  65    fl_add_object(fl_current_form, ob);
  66
  67    return ob;
  68 }
  69
  70
  71 static
  72 void draw_bitmaptable(FL_OBJECT *ob)
  73 {
  74         int i, j, lx;
  75         FL_Coord mx, my;
  76         FL_Coord xx, yy, ww, hh;
  77         BMTABLE_SPEC * sp = (BMTABLE_SPEC *)ob->spec;
  78         GC gc = fl_state[fl_get_vclass()].gc[0];
  79         if (!sp) return;
  80
  81         /* draw the bounding box first */
  82         lx = sp->maxi % sp->nx;
  83         fl_drw_box(ob->boxtype, ob->x, ob->y, ob->w, ob->h, ob->col1, ob->bw);
  84         if (lx) {
  85                 i = FL_abs(ob->bw);
  86                 xx = ob->x+ sp->dx*lx + i;
  87                 yy = ob->y+ (sp->ny-1)*sp->dy+i;
  88                 ww = ob->x+ob->w - xx - i;
  89                 hh = ob->y+ob->h-yy-i;
  90                 fl_drw_frame(FL_DOWN_FRAME, xx, yy, ww, hh, ob->col1, ob->bw);
  91                 fl_rectf(xx, yy, ww+i, hh+i, ob->col1);
  92         }
  93
  94         /* draw the background bitmap */
  95         if (sp->bdata)  {
  96                 if (!sp->pix) {
  97                         sp->pix = XCreatePixmapFromBitmapData(fl_display, fl_winget(),
  98                                                               (char*)sp->bdata,
  99                                                                sp->bw, sp->bh,
 100                                         fl_get_flcolor(ob->lcol), fl_get_flcolor(ob->col1),
 101                                                                /*DefaultDepth(fl_display, DefaultScreen(fl_display))*/ fl_state[fl_get_vclass()].depth);
 102                         XFlush(fl_display);
 103                 }
 104         }
 105         if (sp->pix) {
 106                 /* Adjust position */
 107                 if (sp->bx < FL_abs(ob->bw) + 1) {
 108                         xx = FL_abs(ob->bw) - sp->bx + 1;
 109                         mx = ob->x + FL_abs(ob->bw) + 1;
 110                 } else  {
 111                         xx = 0;
 112                         mx = ob->x + sp->bx;
 113                 }
 114                 if (sp->by < FL_abs(ob->bw) + 1)  {
 115                         yy = FL_abs(ob->bw) - sp->by + 1;
 116                         my = ob->y + FL_abs(ob->bw) + 1;
 117                 } else   {
 118                         yy = 0;
 119                         my = ob->y + sp->by;
 120                 }
 121                 ww = (mx + sp->bw < ob->x + ob->w - FL_abs(ob->bw)) ?
 122                         sp->bw: ob->x + ob->w - FL_abs(ob->bw) - mx;
 123                 hh = (my + sp->bh < ob->y + ob->h - FL_abs(ob->bw)) ?
 124                         sp->bh: ob->y + ob->h - FL_abs(ob->bw) - my;
 125
 126                 i = FL_abs(ob->bw);
 127                 j = hh - ((lx) ? sp->dy+2*i: 0);
 128                 XCopyArea(fl_display, sp->pix, fl_winget(), gc, xx, yy, ww, j, mx, my);
 129                 XFlush(fl_display);
 130                 if (lx) {
 131                         XCopyArea(fl_display, sp->pix, fl_winget(), gc, xx,
 132                                           yy+j, lx*sp->dx-2*i, hh-j, mx, my+j);
 133                         XFlush(fl_display);
 134                 }
 135         }
 136
 137
 138         /* draw the grid if type > FLAT */
 139         if (ob->type > FL_BMTABLE_FLAT)  {
 140                 mx = ob->x + ob->w;
 141                 my = ob->y + ob->h;
 142                 ww = ob->w;
 143                 for (yy= ob->y; yy<= my; yy+= sp->dy) {
 144                         if (ob->boxtype!= FL_FLAT_BOX && (yy == ob->y || yy>my-sp->dy))
 145                                 continue;
 146                         if (lx>0 && yy>= my-sp->dy - sp->dy/2)
 147                                 ww = lx*sp->dx;
 148                         fl_diagline(ob->x, yy, ww, 1, FL_BOTTOM_BCOL);
 149                         fl_diagline(ob->x, yy+1, ww-2, 1, FL_TOP_BCOL);
 150                 }
 151                 hh = ob->h;
 152                 for (xx= ob->x; xx<= mx; xx+= sp->dx)  {
 153                         if (ob->boxtype!= FL_FLAT_BOX && (xx == ob->x || xx>mx-sp->dx))
 154                                 continue;
 155                         if (lx>0 && xx>= ob->x+lx*sp->dx)
 156                                 hh = (sp->ny-1)*sp->dy;
 157                         fl_diagline(xx, ob->y, 1, hh, FL_RIGHT_BCOL);
 158                         fl_diagline(xx+1, ob->y+1, 1, hh-2, FL_LEFT_BCOL);
 159                 }
 160         }
 161
 162         /* Simulate a pushed button */
 163         if (ob->pushed && 0 <= sp->i && sp->i < sp->maxi)  {
 164                 i = sp->i % sp->nx;
 165                 j = sp->i/sp->nx;
 166                 ww = sp->dx-2*FL_abs(ob->bw);
 167                 hh = sp->dy-2*FL_abs(ob->bw);
 168                 xx = ob->x + sp->dx*i + FL_abs(ob->bw);
 169                 yy = ob->y + sp->dy*j + FL_abs(ob->bw);
 170                 fl_drw_frame(FL_DOWN_FRAME, xx, yy, ww, hh, ob->col1, ob->bw);
 171         }
 172 }
 173
 174
 175 int handle_bitmaptable(FL_OBJECT * ob, int event, FL_Coord mx,
 176                                   FL_Coord my, int key, void * xev)
 177 {
 178         int i, j;
 179         BMTABLE_SPEC * sp = (BMTABLE_SPEC *)ob->spec;
 180
 181         switch (event)  {
 182     case FL_DRAW:
 183                 draw_bitmaptable(ob);
 184                 break;
 185     case FL_MOUSE:
 186                 if (!ob->belowmouse) {    /* This never happens. Why? */
 187                         sp->i = -1;
 188                         fl_redraw_object(ob);
 189                         break;
 190                 }
 191                 i = (mx - ob->x)/sp->dx;  j = (my - ob->y)/sp->dy;
 192                 if (i>= 0 && i< sp->nx && j>= 0 && j< sp->ny)   {
 193                         i += j*sp->nx;
 194                         if (i >= sp->maxi) i = -1;
 195                         if (sp->i !=  i)  {
 196                                 sp->i = i;
 197                                 fl_redraw_object(ob);
 198                         }
 199                 }
 200                 break;
 201     case FL_PUSH:
 202                 sp->mousebut = key;
 203                 i = (mx - ob->x)/sp->dx + ((my - ob->y)/sp->dy)*sp->nx;
 204                 if (0 <= i && i < sp->maxi)  {
 205                         sp->i =  i;
 206                         fl_redraw_object(ob);
 207                 } else
 208                         sp->i =  -1;
 209                 break;
 210     case FL_RELEASE:
 211                 fl_redraw_object(ob);
 212                 return 1;
 213     case FL_FREEMEM:
 214             if (sp->pix) {
 215                     XFreePixmap(fl_display, sp->pix);
 216                     XFlush(fl_display);
 217             }
 218                 fl_free(((BMTABLE_SPEC*)ob->spec));
 219                 break;
 220         }
 221         return 0;
 222 }
 223
 224
 225 /*
 226  * The table has nx columns of dx width each and ny rows of dy height each.
 227  * Initially the position of the firts item is supposed to be the same that
 228  * the object position (x, y), and the number of items is supposed to be
 229  * exactly nx*ny.
 230  *
 231  * The user could change these later. See below.
 232  */
 233 void fl_set_bmtable_data(FL_OBJECT * ob, int nx, int ny, int bw, int bh,
 234                         unsigned char const * bdata)
 235 {
 236    BMTABLE_SPEC * sp = (BMTABLE_SPEC *)ob->spec;
 237    if (sp) {
 238      sp->nx = nx;
 239      sp->ny = ny;
 240      sp->bx = FL_abs(ob->bw);
 241      sp->by = FL_abs(ob->bw);
 242      sp->dx = ob->w/nx;
 243      sp->dy = ob->h/ny;
 244      sp->i = -1;
 245      sp->maxi = sp->nx * sp->ny;
 246      sp->bw = bw;
 247      sp->bh = bh;
 248      sp->bdata = bdata;
 249    }
 250 }
 251
 252
 253 void fl_set_bmtable_pixmap_data(FL_OBJECT * ob, int nx, int ny,
 254                         char ** pdata)
 255 {
 256         BMTABLE_SPEC * sp = (BMTABLE_SPEC *)ob->spec;
 257         if (sp) {
 258                 Pixmap dummy_shapemask = 0;
 259                 XpmAttributes dumb_attributes = { 0 };
 260                 sp->nx = nx;
 261                 sp->ny = ny;
 262                 sp->bx = FL_abs(ob->bw);
 263                 sp->by = FL_abs(ob->bw);
 264                 sp->dx = ob->w/nx;
 265                 sp->dy = ob->h/ny;
 266                 sp->i = -1;
 267                 sp->maxi = sp->nx * sp->ny;
 268                 sp->bdata = 0;
 269                 dumb_attributes.colormap = fl_state[fl_get_vclass()].colormap;
 270                 dumb_attributes.closeness = 30000;
 271                 dumb_attributes.valuemask = XpmColormap | XpmCloseness;
 272                 if (XCreatePixmapFromData(fl_display, fl_winget(), pdata,
 273                                           &(sp->pix), &dummy_shapemask,
 274                                           &dumb_attributes) == XpmSuccess) {
 275                         sp->bw = dumb_attributes.width;
 276                         sp->bh = dumb_attributes.height;
 277                         XpmFreeAttributes(&dumb_attributes);
 278                         if (dummy_shapemask) {
 279                                 XFreePixmap(fl_display, dummy_shapemask);
 280                         }
 281                 }
 282         }
 283 }
 284
 285
 286 /*
 287  *  This function works only for X11R6 or later
 288  */
 289 #if XlibSpecificationRelease > 5
 290
 291 void fl_set_bmtable_file(FL_OBJECT * ob, int nx, int ny, char const * filename)
 292 {
 293    int xh, yh;
 294    unsigned int bw, bh;
 295    unsigned char * bdata;
 296
 297    if(XReadBitmapFileData(filename, &bw, &bh,
 298                           &bdata, &xh, &yh) == BitmapSuccess)
 299      fl_set_bmtable_data(ob, nx, ny, bw, bh, bdata);
 300    XFlush(fl_display);
 301 }
 302
 303 #else
 304
 305 void fl_set_bmtable_file(FL_OBJECT * ob, int nx, int ny, char const * filename)
 306 {
 307   fprintf(stderr, "Set bmtable file: Sorry, I need X11 release 6 to do "
 308            "work!\n");
 309 }
 310
 311 #endif
 312
 313
 314
 315 void fl_set_bmtable_pixmap_file(FL_OBJECT *ob, int nx, int ny, char const *filename)
 316 {
 317   //extern Colormap color_map;
 318         BMTABLE_SPEC *sp = (BMTABLE_SPEC *)ob->spec;
 319         if (sp) {
 320                 Pixmap dummy_shapemask = 0;
 321                 XpmAttributes dumb_attributes = { 0 };
 322                 sp->nx = nx;
 323                 sp->ny = ny;
 324                 sp->bx = FL_abs(ob->bw);
 325                 sp->by = FL_abs(ob->bw);
 326                 sp->dx = ob->w/nx;
 327                 sp->dy = ob->h/ny;
 328                 sp->i = -1;
 329                 sp->maxi = sp->nx * sp->ny;
 330                 sp->bdata = 0;
 331
 332                 dumb_attributes.colormap = fl_state[fl_get_vclass()].colormap;
 333                 dumb_attributes.closeness = 30000;
 334                 dumb_attributes.valuemask = XpmColormap | XpmCloseness;
 335
 336                 if (XReadPixmapFile(fl_display, fl_winget(), (char *)filename,
 337                                     &(sp->pix), &dummy_shapemask,
 338                                     &dumb_attributes) == XpmSuccess) {
 339                         sp->bw = dumb_attributes.width;
 340                         sp->bh = dumb_attributes.height;
 341                         XpmFreeAttributes(&dumb_attributes);
 342                         if (dummy_shapemask) {
 343                                 XFreePixmap(fl_display, dummy_shapemask);
 344                         }
 345                 }
 346                 //XFlush(fl_display);
 347         }
 348 }
 349
 350
 351 /*
 352  * This function allows to adjust the position of the first item and its
 353  * size (dx, dy). The input values are incremental, not absolute.
 354  */
 355 void fl_set_bmtable_adjust(FL_OBJECT *ob, int px, int py, int dx, int dy)
 356 {
 357    BMTABLE_SPEC *sp = (BMTABLE_SPEC *)ob->spec;
 358    if (sp) {
 359      sp->bx += px;
 360      sp->by += py;
 361      sp->dx += dx;
 362      sp->dy += dy;
 363    }
 364 }
 365
 366 /*
 367  * This function returns the table's selected position.
 368  */
 369 int fl_get_bmtable(FL_OBJECT *ob)
 370 {
 371    if ((BMTABLE_SPEC *)ob->spec)
 372      return  ((BMTABLE_SPEC *)ob->spec)->i;
 373    else
 374      return 0;
 375 }
 376
 377
 378 /*
 379  * You can change the max number of items if you want.
 380  */
 381 void fl_set_bmtable_maxitems(FL_OBJECT * ob, int i)
 382 {
 383    if (i > 0 && (BMTABLE_SPEC *)ob->spec)
 384      ((BMTABLE_SPEC *)ob->spec)->maxi = i;
 385 }
 386
 387
 388 int fl_get_bmtable_maxitems(FL_OBJECT * ob)
 389 {
 390    if ((BMTABLE_SPEC *)ob->spec)
 391      return  ((BMTABLE_SPEC *)ob->spec)->maxi;
 392    else
 393      return 0;
 394 }
 395
 396
 397 void fl_replace_bmtable_item(FL_OBJECT * ob, int id, int cw, int ch, char * data)
 398 {
 399    fprintf(stderr, "Replace bmtable item: Sorry, not yet implemented!\n");
 400 }
 401
 402
 403 void fl_get_bmtable_item(FL_OBJECT * ob, int id, int * cw, int * ch, char * data)
 404 {
 405    fprintf(stderr, "Get bmtable item: Sorry, not yet implemented!\n");
 406 }
 407
 408 void fl_set_bmtable(FL_OBJECT * ob, int pushed, int pos)
 409 {
 410    if ((BMTABLE_SPEC *)ob->spec)
 411      ((BMTABLE_SPEC *)ob->spec)->i = (pushed) ? pos: -1;
 412 }
 413
 414
 415 int fl_get_bmtable_numb(FL_OBJECT *ob)
 416 {
 417    if ((BMTABLE_SPEC *)ob->spec)
 418      return ((BMTABLE_SPEC *)ob->spec)->mousebut;
 419    else
 420      return 0;
 421 }
 422
 423
 424 Pixmap fl_get_bmtable_pixmap(FL_OBJECT * ob)
 425 {
 426    if ((BMTABLE_SPEC *)ob->spec)
 427      return ((BMTABLE_SPEC *)ob->spec)->pix;
 428    else
 429      return 0;
 430 }
 431
 432
 433 void fl_draw_bmtable_item(FL_OBJECT * ob, int i, Drawable d, int xx, int yy)
 434 {
 435    int x, y, w, h;
 436    GC gc = fl_state[fl_get_vclass()].gc[0];
 437    BMTABLE_SPEC * sp = (BMTABLE_SPEC *)ob->spec;
 438
 439    if (sp && sp->pix) {
 440       x = (i % sp->nx)*sp->dx + FL_abs(ob->bw);
 441       y = (i/sp->nx)*sp->dy + FL_abs(ob->bw);
 442       w = sp->dx-2*FL_abs(ob->bw);
 443       h = sp->dy-2*FL_abs(ob->bw);
 444       XCopyArea(fl_display, sp->pix, d, gc, x, y, w, h, xx, yy);
 445       XFlush(fl_display);
 446    }
 447 }
 448
 449 /* Free the current bitmap and pixmap in preparation for installing a new one */
 450 void fl_free_bmtable_bitmap(FL_OBJECT * ob)
 451 {
 452   BMTABLE_SPEC * sp = (BMTABLE_SPEC *)ob->spec;
 453
 454   /* dump the temporary pixmap */
 455   if (sp && sp->pix) {
 456     XFreePixmap(fl_display, sp->pix);
 457     XFlush(fl_display);
 458     sp->pix = 0;
 459   }
 460
 461   /* and free the space taken by bdata etc. */
 462   if (sp && sp->bdata) {
 463     fl_free((void*)sp->bdata);
 464     sp->bdata = 0;
 465   }
 466 }
 467
 468 /* Free the current pixmap in preparation for installing a new one */
 469 /* This is needed when using data instead of files to set bitmaps  */
 470 void fl_free_bmtable_pixmap(FL_OBJECT *ob)
 471 {
 472   BMTABLE_SPEC * sp = (BMTABLE_SPEC *)ob->spec;
 473
 474   /* dump the temporary pixmap */
 475   if (sp && sp->pix) {
 476     XFreePixmap(fl_display, sp->pix);
 477     XFlush(fl_display);
 478     sp->pix = 0;
 479   }
 480 }
 481
 482 #if defined(__cplusplus)
 483 }
 484 #endif